#include <stdio.h>
#define PI  3.141597

//#define u32  unsigned int 
//#define u16  unsigned short int 
typedef  unsigned int  uint32_t;
typedef  unsigned short int  uint16_t;
typedef  unsigned char  uint8_t;

typedef uint32_t  u32;
typedef uint32_t  u16;

#define  sum(x,y)   x+y
//#define  sum(x,y)  ((x)*(y))
#define  dayin(a)  printf("he == %d\n",a)

int main()
{
	u32 he = 0;
	uint8_t a = 6;
//	he = sum(3,5) * 8 ; // 3+5  (3+5)

	he = sum(3+5,6+8); //  (3+5*6+8)
//	printf("he == %d\n",he); 
	dayin(he);
	
	
	return 0;
}

